Problem Details: Qmobile Z3 slow speed or hang on android logo problem, Pattern Lock problem forgot pattern lock.
We can solve these problems using simple trick or by do hard reset cellphone in few minutes, just follow the steps below and you can do that easily.

Power off mobile completely.
Press and hold power key and volume down key.
Press recovery mode and wipe data factory reset.
Press reboot mobile.
Note: Take backup of important data by this method all data will be delete

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